RE: 7mm-08 for moose?
There are still a lot of people in Northern Ontario who hunt with the .303. I now live in Alberta and I personally know a few people who still hunt with a .303... I also have on numerous occations ran into natives in the field who were carrying Lee Enfields..
But I would say that the most popular caliber here in Alberta (again from my travels) is the .270. My primary rifle is the .270 and I retired my grandfather's .303 a few years back.
Cheers.